I.

1. have known                               9. has given

2. have learnt                                10. has spoken

3. have seen                                  11. have taken

4. have been                                 12. have done

5. has - started                              13. has bought

6. has lived                                    14. has had

7. has written                                15. has worked

8. have eaten                                16. has found

II.

1. Joan has lived in this apartment since 2005.

2. Ellen and Rose have known each other for 40 years.

3. The teacher has been at school since 8:00 this morning.

4. Robbie has had a beard for six months.

5. Dennis has owned his car for four years.

6. Maria has worn glasses since she was five years old.

7. David has been fallen in love with Patricia since they were teenagers.

8. Mark has worked at the bank for three years.

9. Sam has known how to swim for three years.

III.

1. I have had a flu since last week.

2. She has been divorced for a long time.

3. He has been absent from school all week.

4. I have lived in this apartment since I moved to this city.

5. Teacher has already taught that lesson.

6. Edith has worn glasses since she was a child.

7.

8. The children have been very happy since they got their new puppy.